Blast furnace cinder or open hearth slag pot



Jan. 10, 1939.

cfw. How'AT BLAST FUHNACE CINDER OR OPEN HEARTH SLAG POT Filed Feb. 19, 1937 2 Sheets-Sheet 1 INVENTOR. 62 Hes/VCE ift/- Ho wn 7' Bywjgmo ATTORNEY Jan. 10, 1939. C, w. HOWAT 2,143,557

BLAST FURNACE CINDER OR OPEN HEARTH SLAG POT Filed Feb. 19, 1937 2 Sheets-Sheet 2 IN V EN TOR. 62 HQE/VCE WH0 wn-r A TTORNEY Patented Jan. 10, 1939 UNITED STATES PATENT OFFICE BLAST FURNACE CINDER 0R OPEN HEARTH SLAG POT Clarence W. Howat, Pittsburgh, Pa.

`Application February 19, 1937, Serial No. 126,605

4 Claims.

. area of the pot.

L Another object of my invention is to provide a construction of a cinder or slag pot which substantially" prevents side wall deformation present in the pots heretofore employed.

Another object of my invention Ais to provide a construction of a yoke or bail, employed'in-con-'- junction with the cinder or slag pot, which mate- -rially assists in reducing the time required for cooling the contents of the pot.

Still another object of my invention is to provide a construction of an improved means for locking the pot to the body of the trunnion ring or bail.

In the construction of a blast furnace cinder pot or a slag pot for open hearth furnaces in accordance with my invention, a pot having plain cylindrical section and a bowl-shaped end section is provided with outwardly extending ribs or fins about the outer periphery thereof. These ns or ribs extend vertically substantially the height of the pot. In addition to the benefits provided for by the aforementioned ribs, a plurality of stools or reinforcing members are formed integral with the side walls of the pot, adjacent the longitudinal center of the walls. Disposed between the reinforcing members and about the outer periphery of the pot is a trunnion ring or bail. The pot is locked to the body of the trunnion ring by means of latches pivotally mounted on some of the reinforcing members of the pot.

For a better understanding of the invention,

reference may now be had to the accompanying drawings forming a part of the specification in which:

Fig. 1 is a side elevational view of a pot and trunnion constructed in accordance with my invention, with portions broken away for the sake of clearness.

Fig. 2 is a plan view of the pot as shown in Fig. 1.

Fig. 3 is a vertical section of a pot, constructed in accordance with my invention, taken substantially along line III-III of Fig. 2, and,

Fig. 4 is an enlarged detail view disclosing the thickness of the ribs with regard to the thickness of the wall of the pot.

(Cl. 26S-39) In practicing my invention a, pot I0, having a wall II, terminating in a bowl-shaped end I2, is employed. A plurality of radially extending fins or ribs I3 are provided about the outer periphery. of the wall, the ribs extending substantially from the top to the bottom of the pot. As shown in Fig. 4, the ribs I3 are of a thickness equal to approximately 30% the thickness of the wall. Moreover, the ribs are equally spaced and they Vare of suiiicientnumber as to increase the heat dissipating area of the pot approximately 50%.

A plurality of reinforcing members I4 are provided about the outer periphery of the pot. Each of the members I4 are provided with a flange I5,

i extending outwardly at right angles, with respect to the topof the pot and terminating in a downwardly extending lug` I 6. VThe lower surface of the flange I5, as indicated at I1, engages atrunf nion I8 having abody portion I9. The body portion I9 is formed with flanges 20 and 2|, and is `positioned about the outer periphery of the pot with the flange 20 engaging the surface I1 of the reinforcing members I4. To materially increase dissipation of the heat from the pot a plurality of openings 22 are formed in the body of the trunnion I8. The provision, of the openings 22, is important in that the openings permit a rapid dissipation of the heat from the pot adjacent the trunnion ring. A pair of journals 23 formed integral with the body of the trunnion ring and extending outwardly therefrom is provided for supporting the pot and trunnion ring on a furnace car (not shown).

Formed integral with the wall of the pot and positioned below the trunnion I8 is a series of elements 24. The members 24 extend outwardly from the wall as shown in Fig. 3 and they are grouped in pairs, as are the members I4. Arms or latches 25, each having an elongated slot 26 are plvotally mounted, by means of pins, between pairs of the reinforcing members 24, as indicated at 21. Adjacent the outer end of the latch 25 is formed a flange 28, extending upwardly when the latch is in operative position. The latch engages the flange 2| of the trunnion ring and is disposed between a pair of fingers 29, extending downwardly from the body of the trunnion ring.

In positioning the pot and locking it to the trun- Y nion ring, each of the latches 25 is placed between a pair of the fingers 29 and locked in position by means of a pin 30 extending through the fingers and coacting with the elongated slot 26 in the latch 25.

From the foregoing description, it will be apparent that I have provided and improved construction of a blast furnace cinder pot and slag pot for open hearth furnaces together with a trunnion, which will materially reduce the time required in cooling the contents of the pot.' and that the reinforcing members materially assist in providing a pot that is substantially free from side walldeformation. A

It is to be understood that the form of the invention herewith shown and described is merely illustrative of a preferred embodiment and that such changes as fall within the purview of one skilled in the art, may be made without vdeparting from the spirit of the invention and the scope of the appended claims.

1. In a cinder pot for blast furnaces or slag pot for open hearth furnaces comprising a substantially frusta-conical wall portion, a plurality `of outwardly extending ribs about the outer periphery o f the wall, a plurality of members positioned in rowsabout the outer periphery of the pot, a plurality of arms pivotally mounted on the lower members, a yoke positioned between the upper and lower rows of members and means engaging the arms for locking the pot to the yoke.

2. A cinder pot for blast furnaces or a slag pot for open hearth furnaces comprising frusta-conical wall portion, a plurality of outwardly extending-ribs about the outer periphery of the wall, a plurality of reinforcing members extending outwardly from the wall, each ofthe reinforcing members having a flange terminating in a downwardly extending lug, a yoke .positioned about the outer periphery of the pot, with the top thereof engaging the reinforcing members, a plurality of members below the yoke and ex- Y tending outwardly from the wall a plurality of ly from the wall, a trunnion ring positioned about the outer periphery of the pot, with the top of the trunnion engaging the reinforcing members, a plurality of fingers projecting downwardly from the trunnion ring, a plurality of members below the trunnion and means mounted on the last mentioned members coacting with the lingers for locking the pot to lthe trunnion ring.

4. A cinder pot for blast furnaces or slag pot for open hearth furnaces comprising a frustoconical wall portion, a plurality of relatively thin, outwardly extending heat dissipating ribs, the ribs extending vertically from the Atop to substantially the bottom of the pot, a plurality of members extending outwardly from the wall, a trunnion ring positioned about the outer periphery of 'the pot, with the top of the trunnion ring engaging the members, a plurality of members positioned below thetrunnion ring and means engaging the last mentioned members for lock ing the pot to the trunnion ring. y

AW. HOWAT. 

